Home / 20,100.70-27,735.39-12,137.59

Finding the Fourth Proportional to 20,100.70, 27,735.39 and 12,137.59

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Solution

The fourth proportional to 20,100.70, 27,735.39 and 12,137.59 is: 16,747.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,100.70 : 27,735.39 = 12,137.59 : x
  2. Step 2: Convert to fraction form
    20,100.70/27,735.39 = 12,137.59/x
  3. Step 3: Cross multiply
    20,100.70x = 27,735.39 × 12,137.59
  4. Step 4: Simplify right side
    20,100.70x = 336,640,792.31
  5. Step 5: Solve for x
    x = 336,640,792.31/20,100.70
  6. Step 6: Final answer
    x = 16,747.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.